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I do believe you can change the capture settings from COLOR to B&W.
However, it has ALWAYS been my experience (and that of professionals), that if a picture is desired to be in Black and White, then use a computer editing software to change the color photo to B&W.
Because, if you capture the image in Black and WHite...then it will always and forever BE B&W. If ever in the future you decide you want to see or know what that picture looks like in color....you cant.
So if you START with color and then EDIT it down to B&W, you will always have the color picture.
But if you just MUST capture in B&W, i can find the instructions for you.